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