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