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