One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,9)(4,13)(5,14)(6,8)(7,12)(10,11)(15,16)(17,18,23,25)(19,28,29,24)(20,30,27,22)(21,26,31,32)(33,34,38,42)(35,39,37,41)(36,40,45,44)(43,47,46,48)(1,3)(2,7)(4,10)(5,11)(6,12)(8,9)(13,15)(14,16)(17,19)(18,24)(20,21)(22,26)(23,29)(25,28)(27,31)(30,32)(33,34)(35,39)(36,44)(37,41)(38,42)(40,45)(43,48)(46,47) involution — undirected(2,8)(4,14)(7,9)(10,16)(18,25)(19,29)(20,27)(26,32)(33,35,38,37)(34,39,42,41)(36,43,45,46)(40,47,44,48)(1,4)(2,5)(3,10)(6,14)(7,11)(8,13)(9,15)(12,16)(17,20,23,27)(18,22,25,30)(19,21,29,31)(24,26,28,32)(33,34)(35,39)(36,40)(37,41)(38,42)(43,47)(44,45)(46,48)(1,3)(2,9)(4,10)(5,15)(6,12)(7,8)(11,13)(14,16)(17,21)(18,26)(19,27)(20,29)(22,28)(23,31)(24,30)(25,32)(33,36)(34,40)(35,43)(37,46)(38,45)(39,47)(41,48)(42,44) involution — undirected(1,5)(2,4)(3,11)(6,13)(7,10)(8,14)(9,16)(12,15)(17,22)(18,27)(19,26)(20,25)(21,28)(23,30)(24,31)(29,32)(33,37,38,35)(34,41,42,39)(36,43,45,46)(40,47,44,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.