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