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