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