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