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