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)(19,31)(20,36)(21,30)(22,28)(23,29)(24,27)(25,34)(26,38)(32,48)(33,43)(35,45)(37,42)(39,44)(40,47)(41,46) involution — undirected(1,3,5,11)(2,6,7,9)(4,12,13,10)(8,16,15,14)(17,19)(18,25)(20,37)(21,33)(22,41)(23,34)(24,35)(26,28)(27,43)(29,31)(30,45)(32,38)(36,47)(39,40)(42,44)(46,48)(17,20,23,39)(18,26,29,46)(19,32,34,22)(21,38,24,41)(25,42,31,47)(27,36,30,44)(28,45,48,43)(33,40,35,37)(2,7)(6,9)(8,15)(14,16)(17,21,23,24)(18,27,29,30)(19,33,34,35)(20,38,39,41)(22,37,32,40)(25,43,31,45)(26,36,46,44)(28,47,48,42)(1,4,5,13)(2,8,7,15)(3,10,11,12)(6,14,9,16)(17,22)(18,28)(19,20)(21,40)(23,32)(24,37)(25,44)(26,45)(27,42)(29,48)(30,47)(31,36)(33,41)(34,39)(35,38)(43,46)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.