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