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