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