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