One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,8)(5,14)(6,10)(9,15)(11,12)(13,16)(17,18,21,24)(19,22,27,25)(20,28,29,23)(26,31,32,30)(33,34)(35,41)(36,43)(37,45)(38,40)(39,47)(42,44)(46,48)(1,3)(2,7)(4,5)(6,11)(8,14)(9,16)(10,12)(13,15)(17,18,21,24)(19,22,27,25)(20,28,29,23)(26,31,32,30)(33,35,38,43)(34,36,40,41)(37,46,47,42)(39,48,45,44)(3,11)(4,13)(7,12)(8,16)(17,18)(19,25)(20,23)(21,24)(22,27)(26,31)(28,29)(30,32)(33,34,38,40)(35,36,43,41)(37,39,47,45)(42,44,46,48)(1,4,6,13)(2,8,10,16)(3,5,11,15)(7,14,12,9)(17,19)(18,22)(20,26)(21,27)(23,30)(24,25)(28,31)(29,32)(33,36,38,41)(34,35,40,43)(37,44,47,48)(39,42,45,46)(1,5)(2,9)(3,4)(6,15)(7,16)(8,12)(10,14)(11,13)(17,18)(19,25)(20,23)(21,24)(22,27)(26,31)(28,29)(30,32)(33,35)(34,36)(37,42)(38,43)(39,44)(40,41)(45,48)(46,47) involution — undirected(1,2)(3,12)(4,8)(5,9)(6,10)(7,11)(13,16)(14,15)(17,20,21,29)(18,23,24,28)(19,26,27,32)(22,30,25,31)(33,37)(34,39)(35,42)(36,44)(38,47)(40,45)(41,48)(43,46)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.