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