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