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