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