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